My Zilla clips and combination locks came in today. It would probably be better is I had a Zillla screen cover. They seem to work pretty good so far. Its a bit of a hassle getting the top back on with them but not that big of a deal. I would recommend them if you need to lock up your tank using a screen top. Im gonna get another set of them for my 20 gallon tank when I get a leopard gecko. So ya im pretty pleased with it. Just thought you guys and gals would like to know how it worked out.